Ackoff, R. "Toward a system of systems concepts," Management Science (17:11) 1971, pp 661-671.
Leymann, F., and Altenhuber, W. "Managing business processes as an information resource," IBM Systems Journal (33:2) 1994, pp 326-348.
Leymann, F., and Roller, D. "Workflow-based applications," IBM Systems Journal (36:1) 1997, pp 102-123.
Mahling, D.E., Craven, N., and Croft, W.B. "From Office Automation to Intelligent Workflow Systems," IEEE Expert (10:June) 1995, pp 41-47.
Georgakopolous, D., Hornick, M., and Sheth, A. "An Overview of Workflow Management: From Process Modeling to Workflow Automation Infrastructure," Distributed and Parallel Databases (3:2) 1995, pp 119-153.
Kettinger, W.J., Teng, J., T.C., and Guha, S. "Business Process Change: A Study of Methodologies, Techniques and Tools," MISQ:March 1997.
Here are some sources for definitions around systems, workflow and BPM (all in peer reviewed journals):
clipped from www.bpm-research.com
